Vise.



:Nof 709,!20. Patented Sept.' I6, |902,

(Application led Jn. 21. 1902.)

FIG; i.

(No Model.)

Jee-d m F \"a W Mhlmgh mlm g mill FEM. -r Fm' a] v [r1/ven tor.:

UNITED ASTATES PATENT Fries.

VILLIAM E. SNEDIKER, OF CAMDEN, NE\V JERSEY.

VISE.`

SPECIFICATION Vforming part of Letters Patent N o. 709,120, datedSeptember 16, 1902.

Application tiled January 2.1. 1902. Serial No. 90,615. (No model.)

To all whom, it may concern:

Beit known that-I, WILLIAM E. SNEDIKER, a citizen of the United States,residing at Ninth street, above Market street, Camden, in the county ofCamden and State of New Jersey, have invented certain new and usefulImprovements in Vises, of which the following is a specification.

My invention relates to improvements in vises and particularlyto thatclass of vises in which the jaws of the'vise are at all times parallelwith each other.

The object of my invention is to construct a vise which can be quicklyadjusted, which can be locked or unlocked by turning the handle lessthan a complete revolution, and which will not get out of order onaccount of the handle not being permitted to turn more than arevolution,thereby overcoming the difficultyexperienced in the use of quick-adjusting vises by inexperienced operators, who would invariably turn thehandle several times in one direction until. the mechanism would be insuch a position that it could not operate properly.

A further object of my invention -is to lockA complete engagement| ofthe teeth of the screw-nut and the toothed rack, thereby preventing thedifficulty heretofore experienced in the teeth of the screw-nut and theteeth of the rack only partially engaging, and consequently strippingoff the teeth and making the vise useless.

Referring to the drawings, Figure l represents a sectional view of avise with the locking mechanism released. Fig. 2 is a sectional viewtaken on line 2 2, Fig. 1. Fig. 3 is a sectional view on line 3 3, Fig.l. Fig. iis a partial longitudinal sectional view of the vise, showingthe position of the parts when locked. Fig. 5 is a sectional view online 5.5, Fig. 4L, showing the parts in different position from Fig. 2.Fig. 6 is a sectional view on line 6 6, Fig. 4, showing the parts indifferent positions fromFig. 3.

A represents the movable jaw of the vise, which forms a partof thehousing, consisting of the bed-plate a, the side Webs a a', and the topa2, as clearly shown in Fig. 3, the bedj 'plate being provided withsuitable means for `attachment to a bench or table.

B represents the'movablejaw. On said jaw is provided a bearing h, inwhich is mounted a shaft E. Said shaft is adapted to rotate in theopening b of the bearing h. Said opening bbeing slightly larger than theshaft E permits the inner end of said shaft to be raised or lowered bymeans of the cams F and G, the bearing b forming a fulcrum for the same.As shown in Fig. 2, a lugr b3 is provided on the jaw B, against whichthe cam F acts. Said lug also acts as a stop, which prevents theprojectionfon the shaft E from turning further than desired. In theportion C of the jawB is provided a set-screw H. Said set-screw engagesthe cam G on the inner end of the shaft E, and when the cam is in theposition shown in Figs. l and 3 the inner end of the shaft E is allowedto be raised and held against said set-screw by the action of thecam Fon the outer end of said shaft coming in contact with the lug b3 on thejaw B. Said set-screwis threaded and forms an adjustable bearing for thecam G; but a lug on the sliding portion C could be used withoutdeparting from my invention.

The shaft E is provided with a screw-thread e, on which is mounted ascrew-nut I. The lower face of said screw-nut is provided with teeth 1l,which engage with a rack J, having teeth ,7' secured to the xedbed-plate a.

In Fig. l the jaw B is released and can be moved in or ont `to anydesired position, as the sliding portion C is permitted to slide freelyin the opening D in thejaw A, the screw-nut I on the shaft E being heldout of engagement with the rack J. The position of the cam F when thevise is released is Vshown in Fig. 2,'the shaft E being turned as far tothe left by-means of the handle K as the projection f will permit. Fig.3 shows the position of the cam' G when the vise is released, as shownin Fig. l. Fig. 4 shows'the jaws of the vise locked with an object wclamped between them. The shaft E, as shown in thisview, hasbeen turnedslightly more than one-half of a revolution, the handle K being turnedto the right, and, as shown in Fig. 5, the cam F has been moved awayfrom the projection b3 on the jaw B, and, as

shown in Fig. 6, the cam Gr on the inner end of the shaft has beenturned so as to depress said inner end of the shaft E and bring thescrew-nutI in con tact with the rack J, secured to the fixed bed platea. The cam Gr, as shown in Figs. 3 and 6, has a very small portion ofits periphery cut away to form the low side of the cam, and a veryslight rotation of the shaft E will cause said shaft to be depressed andforce the screw-nut I down into engagement with the teeth of the rack J.The screw-nut I is depressed with such a slight rotation of the threadedshaft E that it moves downwardly in almost a vertical line, and as thisis done before thejaws of the vise tighten the screw-nut I will find aperfect seat on the toothed rack. Should the points of the teeth of thescrew-nut and the rack strike each other, the cam Gr will force themtogether, causing a slight forward movement of the movable jaw B, whichspace will be taken up when the shaft E is further rotated to tightenthe jaws of the vise. When the teeth on the nut I come in completeengagement with the rack J, the screw-nut cannot move longitudinally,and when the shaft continues to rotate the screw-thread on the sameengaging with the screw-thread in the screwnut I will have a tendency todraw the movable jaw B tightly against the object to be clamped in thevise.

Having thus described my invention, I claim and desire to secure byLetters Patentl. The combination in a vise of the fixed jaw and casing,a fixed rack, a movable jaw, a sliding portion on the same, a threadedshaft, a screw-nut to engage said rack, cams on said shaft adapted toraise and lower the inner end of said shaft substantially as described.

2. The combination in a vise of the fixed jaw and rack, a movable jaw, athreaded shaft, a screw-nut adapted to engage said rack, a cam on saidshaft acting against the movable jaw to raise the inner end of saidshaft, and a cam on the inner end of said shaft adapted to depress theinner end of said shaft substantially as described.

3. The combination in a vise of the fixed jaw and rack, a movable jaw, athreaded shaft, a screw-nut, cams on said shaft to bring the screw-nutinto or out of engagement with the Xed rack.

4. The combination in a vise of the iXed jaw and rack, a movable jaw, athreaded shaft, a screw-nut, cams on said shaft to bring the screw-nutinto or out of engagement with said rack, a set-screw on said movablejaw acting against the cam on the inner end of said shaft substantiallyvas described. v

5. The combination in a vise of the iiXed jaw and rack, a movable jaw, athreaded shaft, a screw-nut, cams on said shaft to bring the screw-nutinto or out of engagement with said rack, a lug on the movable jawacting against the cam on the outer end of said shaft, substantially asdescribed.

6. The combination in a vise of the fixed jaw and rack, a movable jaw, athreaded shaft, a screw-nut, cams on said shaft to bring the screw-nutinto or out of engagement with said rack, a projection on said shaft toprevent said shaft from turning, substantially as described.

In testimony whereof I have aflixed my signature in presence of twowitnesses.

WILLIAM E. SNEDIKER.

Witnesses:

WM. L. WEAVER, WM. F. DONNELLY.

